Thirds to hascal alfred hogel



v (No Model.)

G. MGWILLIAM.

FURNACE.

' No. 244,911. Patented July 26,1881.

(swam/whoa 64%: v'

UNITED STATES PATENT OFFICE.

CHARLES MGWILLIAM, OF MONTREAL, QUEBEC, CANADA, ASSIGNOR OF TWO- THIRDS TO HASCAL ALFRED HOGEL, OF NEW YORK, N. Y., AND ALICE FINLAY FOSTER, OF COWANSVILLE, CANADA.

FURNACE.

SPECIFICATION forming part of Letters Patent No. 244,911, dated July 26, 1881 Application filed May 31, 1881. (No model.)

To all whom it may concern: provements applied; and Fig. 2 a cross-section Beit known that I, CHARLES MCWILLIAM, of same on line H, looking toward the fireof the city of Montreal, in the district of Mondoor.

treal and Province of Quebec, in the Dominion Similarletters of referenceindicate like parts.

5 of Canada, haveinvented certain new and use- A is a pipe or flue extending along one side ful Improvements in Apparatus for Consumof the fire-chamber and terminatinginabranch, ing Smoke in Furnaces and I do hereby de- A, which passes across the front above the 5 5 clare that the following is a full, clear, and exfire door, said branch being provided with any act description of the same. desired number of nozzles, to, the parts being ro This invention relates to improvements in placed in this position in order to overcome the furnaces and steam-generators of every class objections heretofore found to exist where the .in which it is a desideratum to consume the mixture of smoke, air, and steam has been heavy smoke and gases arising from the fire, blown underneaththe grate,among which may and while etficiently eifectin g this object, bebe mentioned the necessity of making the ash- 5 sides assisting the draft and perfect combuspit and fire-doors airtight or practically so, tion. of the fuel, my invention may be convertv and also the fact that the fuel lies so thickly ed into an apparatus for generating gas by on the grate as to prevent the free upward pas- 6 5 conducting the products of combustion by simsage of the products so directed. The other ple means from the fire-chamber to a'gas-reend of the pipe A forms a junction with a 20 tort, the operation of raising steam being meanchamber or pipe, B, placed transversely in the while carried on without interruption. furnace, at or near the bridge, and supported My improvements may be thus briefly deabout level with the top of same by any suitadescribed: Along one side of the fire-chamber ble means. This chamber B is preferably of I place a pipe or flue, which has a branch exthe shape sh0wnviz., an elongated cone--in 25 tending across the front of said chamber above order to serve more thoroughly the purpose of the fire-door. Its other end formsa junction an ejector, and is provided with an opening, I), with a pipe or chamber placed across the furin its upper side, the point of the conical chamnace,underneath the boiler, and at or near the her being taken out through the side wall of bridge, which chamben receives through an the furnace and connected at the cock I) with 3 opening in its upper side the unconsumed a pipe, 0, leading to any system of retort-s and gases and smoke arising from the fire, these gas apparatus. being joined by a current of heated air intro- D is a steam-pipe conducted from the boiler duced into-the chamber through a pipe leadto any desired point where it enters the fireing fromnnderneath the grate, and the whole chamber, (if found necessary to superheat the 3 5 being discharged, mixed with and aided by steam this pipe is taken wholly or partially jets of steam brought from the boiler, through round the grate,) and is connected by T-pipes nozzles in the branch pipe above the 'fire-door, d with the nozzles a. A branch pipe, C,con- 8 5 directly over the fire. ducts steam from the pipe D or from the boiler The apparatusis utilized for the manufacture into the pipe C, and serves to form an ejector 40 of gas by closing the flue at side of fire-chamfor the products of combustion into the retorts. her, and also the air-pipe from underneath the The pipe A is provided with a damper, a, grate, and discharging the smoke and gases placed, as shown in Fig. 1, near its junction 0 through a pipe connected outside the furnacewith the chamber B, and operated by a handle walls with any ordinary retort, gasometer, c. extendingthrough thefurnacewall. The spin- 45 For more complete comprehension of my indle upon which this damper is mounted exvention reference must be had to the annexed tends through A, and also through an air pipe, W drawings, in which Figure 1 represents a sec- E, which is brought from underneath the grate 5 tional plan of part of a furnace with my imand joins the chamber B close to its junction withA, a damper, 0, being inside this air-pipe, and operated by the same spindle and simultaneously with a.

A cock, f, on the steam-pipe D is placed where shown, for regulating the admission of steam into the fire-chamber or branch pipe 0.

The operation of my invention, when used for consuming smoke in the fire-chamber,is as follows: The cock I) is first closed and the dampers a and c and the cockfopencd. The steam is thus admitted to the pipe D and discharges from the T-pipes through the nozzles d, forming an exhaust in the branch A,which has the effect of drawing the smoke and unconsumed gases, as they arise from the fire, into the chamber B through the opening I). These products of combustion are there joined by a current of heated air from the pipe E,and the mixture passes round through the pipe A to the branch A, where itis discharged, with the jets of steam, in a highly-heated condition, directly over the fire, and there becomes totally consumed.

When it is desired to use the waste products of combustion for the purpose of generating gas the dampers a and e and the cock f are closed and the cock I) opened, this operation having the effect, as will be understood, of shutting off the smoke and gas from the pipe A, and preventing the introduction of air from the pipe E. The mixture of gas and smoke is then, by the action of the exhaust formed by the jet of steam, forced from G into C, drawn through the pipe 0 and forced into the retort, (which may be of any pattern found suitable,) where the operation of generating illuminating-gas is carried on in the usual way.

I do not claim in this application the hereinbefore-described features which relate more especially to the collecting of the heavier particles of the products of combustion for subsequent utilization in manufacturing gas, but I reserve the right to file a separate application for Letters Patent, in which said features will be embodied and form the subject of claims.

Having thus described the construction and operation of my invention, what I claim, and desire to secure by Letters Patent, is as follows:

1. In a furnace, a pipe or flue arranged to discharge smoke and unconsumed gases arising from the fire of said furnace, mingled with heated air and steam, from a branch pipe extending along the inside front of the fire-ch amher and above the fire-door, for the purpose set *forth.

2. In combination with the pipe A and branch pipe A, and steam-injectors (I, located above the grate-surface, the chamber B, having an opening in its upper side, substantially as and for the purpose described.

3. In combination, in a furnace, with the smoke and gas receiving chamber B, pipe A, and branch A, the pipe E, receiving air from underneath the grate, for the purpose described.

4. In a smoke-consuming furnace, the combination, substantially as before set forth, of the chamber B, pipe A, and air-pipe E, said pipes A and E being provided with dampers a 0, adapted to be opened or closed simultaneously.

CHARLES MOWILLIAM.

Witnesses:

R. ARTHUR KELLOND, EUGENE QUIRK. 

